Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Chatham Strait

Pinch – Residency

12th sighting in Chatham Strait
Fluke of Pinch
Pinch Confirmed in the catalog @6425
Apr 20 – Sep 29, 2025 · Chatham Strait

Chatham Strait · Apr – Sep 2025

95 m
Deepest dive
3:41
Longest dive
77
Dives
Sightings
4
Days between first and last sighting
162

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 20, 202555 m—44 m
Jun 26, 2025349 m—42 m
Jul 26, 202588 m—64 m
Sep 29, 2025208 m—95 m

Seafloor and sea temperature measured · ✳ dives modelled

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Deepest dive against the seafloor, per sighting

Seafloor · measured Deepest dive · modelled
Apr 20, 2025 — seafloor 55 m (measured), deepest dive 44 m (modelled)Apr 20Jun 26, 2025 — seafloor 349 m (measured), deepest dive 42 m (modelled)Jun 26Jul 26, 2025 — seafloor 88 m (measured), deepest dive 64 m (modelled)Jul 26Sep 29, 2025 — seafloor 208 m (measured), deepest dive 95 m (modelled)Sep 29

Depth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.

Dives

95 m
Deepest dive
3:41
Longest dive
77
Dives
27 m
Avg dive depth
4
Sightings
162
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010095 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (208 m) and the published dive-behaviour distribution. Modelled, not measured.

Deep Effort Score

Deep

Depth, duration and recovery resolved into a single number for this session.

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Place

Where this happened · Sep 29, 2025

measured
Seafloor depth
208 m
Sea-surface temperature
—
Distance from shore
2.0 km

Across the residency · 4 sightings

measured
Seafloor depth
55 m – 349 m
Sea-surface temperature
—
Distance from shore
2.0 km

Sources: GEBCO seafloor grid · PacIOOS coastline distance

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Source records

This activity is assembled from 4 catalogued encounters on Happywhale.

Sighting records from Happywhale, published as occurrence data via GBIF. Individual records are licensed CC0 1.0, CC BY 4.0 or CC BY-NC 4.0, depending on the contributor.

The photographs and fluke identifications behind every sighting are the work of the contributing observers — the citizen scientists, naturalists and operators who logged them, each named in the underlying GBIF occurrence record. Every activity links out to its source encounters on Happywhale. Basemaps © OpenStreetMap contributors (ODbL).

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Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.